The emission of beta radiation provides evidence that neutrons and protons are made up of quarks. Beta (\(\beta^-\)) decay is the release ... the electron as a beta particle.

Researchers at CERN have observed an exceptionally rare particle decay event, potentially paving the way to uncover new ...

So if the strong force binds quarks together, it becomes apparent that the weak force allows them to change flavour: for example switching a down quark to an up quark or vice versa in beta decay.